Hydrocarbon-burner



(No Model.) 0. P. MACK.

HYDROGARBON BURNER. No. 548,647. Patented Oct. 29, 1895.

can a 0 00003000 oooio'ooo 0000 00 000D!) 000 000603000 DDOOO 00 00 DODWITNESSES W ATTUHNEL UNITED STATES PATENT ruins COURTLAND P. MACK, OFMINNEAPOLIS, ASSIGNOR OF NINE-TWENTIETI-IS TO EDWARD W. DURANT, J 13.,OF STILLWATER, MINNESOTA.

HYDROCARBON-BURNER.

SPECIFICATION forming part of Letters Patent No. 548,647, dated October29, 1895.

Application iiled December 16,1893- Serial No. 493,855. (No model.)

To all whom it may concern:

Be it known that I, COURTLAND P. MAoK, of Minneapolis, Hennepin county,Minnesota, have invented certain Improvements in Hydrocarbon-Burners, ofwhich the following is a specification.

My invention relates to improvements in hydrocarbon-burners, its objectbeing to pro vide improved means for atomizing the oil and mingling itwith the air, and for consuming the intermixed oil and air.

To this end my invention consists in providing a fan mounted upon ahollow shaft, through the opening in which shaft extends a pipe leadingfrom the source of oil-supply. The fan is driven by any suitable power,and is inclosed in a case having valve-controlled air-inlets around theshaft in the end opposite the burner and peripheral outlet-open ings.Surrounding the fan-case is a still larger inclosingcase with anintervening space between it and the periphery of the fancase and theend of the fan-case toward the burner. Centrally secured to this outercase and concentric therewith is the burner, which consists of aperforate cylinder or tube having an axial opening at the inner endaround the hollow shaft of the fan, the outer end being entirely open.fiurrounding this burner cylinder or tube is a concentric cylinderclosed at its outer end by a flange upon the burnertube and open at theother end to the interior of the outer case. Secured to the end of thefan-shaft is a centrifugal sprayer or atomizer into which the oil-pipeenters. This atomizer may be of different forms, either funnelshapedwith slotted and perforate walls or a perforate cylinder. The walls ofthe burnertube may also be circumferentially corrugated, withperforations through the sides of the corrugations inclined toward theouter end of the burner, so as to allow the air to pass from the samediagonally through the atomizer.

My invention further consists in the construction and combinationhereinafter more particularly described and claimed.

In the accompanying drawings, forming part of this specification, FigureI is a partial end elevation of my invention, looking toward the end ofthe fan-case opposite the burner.

Fig. II is a central longitudinal section of the same on line m as ofFig. I, showing the relative positions of the parts and having afunnel-shaped oil-atomizer and a cylindrical burner-tube. Fig. III is anend elevation of the burner. Fig. IV is a perspective view of one of thefan blades or wings. Fig. Vis a central longitudinal section of amodified form of burner-tube and oil-atomizer, and Fig. VI is an endelevation of the same.

In the drawings, the fan Ais shown secured to the hub 2, which ismounted upon the hollow shaft 3, provided with the driving-pulley 4:-Inclosing the fan is the case B, through one end of which are thecentrally-arranged inlet-openings 5, provided with valves 6 forregulating the size of the openings. The case B is also provided withperipheral outletopenings 7.

Surrounding the case B is the case 0, having the head 8 in common withthe fan-case, and its cylindrical wall 9 and head 10 parallel with butat a little distance from the corresponding walls of the fan-case, timeallow ing a free passage for the air emitted through the openings 7.

The blades or wings ll of the fan are formed, preferably, with flanges12, by means of which they are riveted to the ends or rings 13 of thefan. The case B is also provided with suitable bearings 14 for thehollow shaft, which are lubricated in any suitable manner, as by meansof an oil-pipe 15. Centrally arranged upon the head 10 of the case G isthe cylinder 16, concentric with the case, the inner end of which isopen. Coaxially arranged within the cylinder'l6 is the burner tube ocylir der D, the outer end of which has 'a circu nfereiitial flange 18,which serves to close the annular space between it and the cylinder 16.

Theinner end of the burner-tube is partially closed by means of the head19, which has a central opening 20 around the shaft 3, and alsopreferably a segmental opening 21 at the lower side of the tube, asshown in Fig. II. This burner-tube is provided with a series ofperforations 22 for the admission, of air from the surrounding space inthe tube 16. The end of the shaft 3 extends through and is approximatelyflush with the inner face of the head 19 of the burner-tube and hassecured to it the atomizer E, preferably conical in shape, with thelarger end outward, and provided with radiating slots 24 andperforations 25. Extending through the opening in the shaft and into theatomizer E is the oilpipe 26, leading to a source of oil-supply.

In the modified construction shown in Figs. V and ,VI the shaft 3 isprovidedwith the cylindrical sprayer F, provided with a series ofperforations 27 and preferably having a cap 3% closing its outer end.For use in connection with this modified form of atomizer I prefer touse the form of burner-tube G, having peripheral flanges 28 at its outerend secured to the end of the cylinder 16 in the same manner as in theother construction, and having its side walls corrugated, preferably inthe form of a series of similar cones 29, with annular interior heads orflanges 30 in the larger ends of the cones closing the space between thecones. Through these heads 30 as well as through the flange 28 arearranged diagonal perforations 31. The head 32 at the inner end of thetube has a central opening 33 and perforations 31.

Operation: The fan being set in motion by means of any suitable powerand the oil al lowed to flow through its pipe 26 as the oil isdischarged into the atomizer E, its rotary motion carries the oil towardits outer edge and through the slits and perforations in its side walls,throwing the oil off in fine particles. At the same time the outer airis drawn into the fan through the openings 5 and forced out through theoutlet-openings 7, thence being driven around over the closed head ofthe fancase through the opening around the atomizer and into thecylinder 16 around the burnertube, thence through the perforations 22,whereit meets and is mingled with the oil as sprayed from theatomizerli, the combined air and oil being then in condition forignition, the flame filling the burner-tube and projecting outwardtherefrom. The force of the airblast is regulated by the speed of thefan and the size of the valve-controlled openings 5.

In the modified construction shown in Fig. V the oil is sprayed bycentrifugal force through the openings in the side Walls of theatomizer, and the air from the fan plunges through the openings 31diagonally toward the atomizer the combustion taking place within andbeyond the tube G in the same ma ses? as'w it'hthe other construction.

' I claim-- 1. In a hydro-carbon burner, the combination of theperforate burner tube, the centrifugal oil atomizer arranged within saidtube, and means for forcing air through the perforations of the tube,substantially as described.

2. In a hydro-carbon burner, the combination of the perforate open endburner tube, the included centrifugal atomizer, the head in the innerend of the tube having openings adjacent the atomizer, the fan, and thecase inclosing the fan and burner tube with intermediate space servingas a communicating passage from the fan to the perforations in the sidesand the openings in the head of said tube.

The combination with the fan and the centrifugal oil atomizer, of theburner tube inclosing the atomizer having its side wallscircumferentially corrugated and perforated in the direction of theblast, means for conveying oil to said atomizer, and means forconducting air from said fan to the perforations in said tube.

4. The combination with the fan, of the centrifugal oil atomizer,1;heinclosing burner tube having its side walls perforated, an annularopening surrounding the atomizer, and asegmental opening at its bottomunderneath the atomizer, means for conveying oil to said atomizer andmeans for conducting air from the fan to said openings and perforations,substantially as described.

5. The combination of the burner tube having an open outer end andperforations in its side walls inclined toward said outer end, theinclosing case for said tube communicating with a source of compressedair supply and having axially inclined end openings, and means forconveying oil into said tube.

6. The combination with the perforate burner tube and its includedcentrifugal burner, of the co-axially arranged fan having axial airinlets and peripheral outlets, and

means for conducting the air from said outlets to the perforations ofsaid tube.

7. In a hydrocarbon burner, the combination of the perforate centrifugalatomizer, the perforate inclosing burner tube, and means for forcing airthrough the perforations into said tube.

8. In a hydrocarbon burner, the combination with the burner tube havingperforate side walls and-an open outer end, of acentrifugal oil atomizerarranged co-axially within said tube, the head closing the inner end ofthe tube, but having a narrow central opening around the atomizer, meansfor rotating said atomizer, and means for forcing the air through theopening around the same, and through the perforations in the walls ofsaid tube, substantially as described.

9. In a hydro-carbon burner, the combination of the burner tube havingperforate side walls and an open outer end, the head substantiallyclosing the inner end of the tube, and having a central opening, thefan, its hollow shaft arranged co-axially within said tube, and with itsend extending through the opening in its head but with an annular spacearound it, the centrifugal oil atomizer arranged within said tube andsecured to said shaft, and the oil pipe arranged within said hollowshaft and leading to said atomizer, substantially .as described.

10. In a hydro-carbon burner, the combination of the fan mounted upon ahollow shaft, the fan case having centrally arranged air inlets in onehead and peripheral outlets, the outer inclosing case, with a spacebetween its side walls and head adjacent to the closed head of the fancase, the axial opening through said head of the outer case, thecylinder secured to said head of the outer case and registerin g withsaid opening, the perforate burner tube co-axially arranged within saidcylinder with an air space between it and said cylin der, thecentrifugal oil atomizer, carried by said shaft and arranged within saidburner tube, substantially as described.

11. In a hydro-carbon burner, the combination with the perforate burnertube, of the cylinder inclcsing said tube, the fan, its hollow shafthaving its end projecting into said burner tube, the centrifugal oilatomizer carried by said shaft, and arranged within said tube, and meansfor directing the air blast from said fan toward the fan shaft, and intothe inner end, and through the side Walls of said burner tube,substantially as described.

12. The combination of the perforate burner tube, the includedcentrifugal atomizer, the co-axially arranged fan having axial air inletand peripheral outlets, and the conduit connecting said fan with saidtube.

13. In combination a perforate open end burner tube, a centrifugalatomizer arranged Within the tube, an oil conduit leading to saidatomizer and the air blast conduit leading to said tube.

In testimony whereof I have hereunto set my hand this 28th day ofNovember, 1893.

COURTLAND P. MACK.

Witnesses:

T. D. MERWIN, H. S. JOHNSON.

